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- Title
Modeling of the adsorption of metribuzin pesticide onto electro-activated granular carbon.
- Authors
Kitous, O.; Abdi, N.; Lounici, H.; Grib, H.; Drouiche, N.; Benyoussef, E.H.; Mameri, N.
- Abstract
The main purpose of the present study is to investigate the mechanism which governs the adsorption of the pesticide onto electro-granular activated carbon (GAC). The operating conditions assessed are: electrical potential, electro-activation time, the initial metribuzin—electro-activated GAC concentration ratio (R = Cp/CGAC). In the first step, it has been confirmed using an experimental design that theC/C0ratio is much more affected by the electrochemical potential application than byRratio. The mathematical model indicates that the electrochemical potential has a significant effect during the metribuzin adsorption during the first half an hour on GAC and thereby demonstrates the electroactivation beneficial effect. In the second step, a mass transfer model has been applied in order to evaluate the effect of the electro-activation of GAC on the kinetic constant. Indeed, the results showed that the electro-activation accelerates the process with kinetic constants 2–3 times higher than those obtained without the electro-activation of GAC.
- Subjects
ACTIVATED carbon; ADSORPTION kinetics; HERBICIDES; SURFACE chemistry; METRIBUZIN
- Publication
Desalination & Water Treatment, 2016, Vol 57, Issue 4, p1865
- ISSN
1944-3994
- Publication type
Article
- DOI
10.1080/19443994.2014.977961